Seagull Models Extra 300S Assembly Manual page 16

EXTRA 300S
Battery.
Receiver.
ATTACHMENT WING-FUSELAGE.
Attach the aluminium tube into fuselage.
Insert two wing panels as pictures below.
16
Antenna.
Instruction Manual
wing bolt.
BALANCING.
1) It is critical that your airplane be bal-
anced correctly. Improper balance will cause
your plane to lose control and crash. The cen-
ter of gravity is locate
leading edge of the wing, measured at wing
tip.
2) If the nose of the plane falls, the plane
is nose heavy. To correct this first move the
battery pack further back in the fuselage. If
this is not possible or does not correct it, stick
small amounts of lead weight on the fuselage
sides under the horizontal stabilizer. If the tail
of the plane falls, the plane is tail heavy.To cor-
rect this, move the battery and receiver for-
ward orif this is not possible, stick weight onto
the firewall.When balanced correctly, the air-
plane should sit level or slightly nose down
when you lift it up with your fingers.
4.5 cm.
4.5cm
back from the